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Old 04-18-2009, 03:47 AM   #1
tmarcel
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Default Brian's 500WHP STI pump + meth

This was a fun car to tune! The owner wanted me to share it with you guys.

Mods are:
  • Entirely stock internal motor
  • 35R kit
  • 83mm MAF
  • 850cc injectors
  • Meth kit with largest injector
  • 3" TBE
  • Air/Oil Separator kit
  • 255lph FP
  • GM 3-Bar MAP Sensor
  • ECU Flash/RomRaider Software

The impressive part here is that this is on the Dyno Dynamics and it was run on the standard out of the box settings. Anybody ever on the DynoDynamics knows that 500whp is quite a lot of power on a Subaru. These numbers would be considerably higher by applying a correction factor like some of the shops do. Either way, doesn't matter so much as making sure that every car is done the same way.

After a few initial pulls, we were ready to turn it up a bit. We went from 474whp and continued to turn the boost up and make changes to the maps. The final pull was so close to 500whp which is really impressive for lack of internal upgrades. The car was absolutley nasty as it contined to climb up out of the rollers. Straps were tight as hell. You can see some small straps in the back that look fairly loose. Those are attached to anchors in the floor for safety and should never be tight or it will cause traction issues. The primary straps of course are ratcheted down as far as they'd go.

Some info on the car without giving it all away. It loves meth and lots of timing and didn't mind being on the lean side for a short time. It's using the largest injector from Coolingmist for a single injector set up so it's running a lot of meth injection on a 50/50 mix. In fact, I decided against adding anymore timing as it was wanting more and more and it had to stop somewhere Boost was peaked near 29psi and I didn't go anymore on that either since I was turning it up little by little and it got to a point where it didn't want to go easily anymore. The AFRs ended up in the mid 12s peak to redline for safety. They were comfortable being leaner though. The dip after peak torque is a combination of boost spike and where the meth goes to the full-on position. It's mostly the meth though, which is difficult to tune out on this particular car.



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Last edited by tmarcel; 05-01-2009 at 04:01 AM.
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Old 04-18-2009, 03:52 AM   #2
subaruNV
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WHITE/ EQ Tuned 350Whp

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very nice numbers....why the cut before 7k though and the dip in power at around 4700.. sorry i read the last line lol
what fmic is that..track day anytime soon!!

Last edited by subaruNV; 04-18-2009 at 04:00 AM.
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Old 04-18-2009, 03:54 AM   #3
tmarcel
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RPM was slightly off. Probably by about 300RPMs.
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Old 04-18-2009, 03:59 AM   #4
subaruNV
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haha ok just acheckin.. are you still on stock suspension? could explain why it was creeping up on the dyno if not then dammm!!!!
love that car!
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Old 04-18-2009, 04:52 AM   #5
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wow. impressive car and numbers. looks like it shreds
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Old 04-18-2009, 05:21 AM   #6
Uncle Buck
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looks like a beast.
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Old 04-18-2009, 05:38 AM   #7
alcoolaid
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Wow at 1:40 I thought that thing was going to fly off the dyno
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Old 04-18-2009, 06:49 AM   #8
iri_tuan
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holy hell!!!
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Old 04-18-2009, 09:37 AM   #9
05stisilver
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Thanks for the posting this up Todd and thanks for the tune!!


Quote:
Originally Posted by subaruNV View Post
very nice numbers....why the cut before 7k though and the dip in power at around 4700.. sorry i read the last line lol
what fmic is that..track day anytime soon!!
It's a UR fmic
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Old 04-18-2009, 10:10 AM   #10
squashman
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Dude, you need to change the way you strap that down. My car is running more WHP on pump and it does not climb out of the straps like that does. The front end lifts, but that's about it. What's shown in that video just looks dangerous. A bit more forward movement and you'd be sailing off the ramp.
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Old 04-18-2009, 11:16 AM   #11
Irishman
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definitly tighten that thing down. I was waiting for the my STi drove off the dyno video.
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Old 04-18-2009, 11:24 AM   #12
tmarcel
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squashman,

There's a little more to it than that. Considering I used to sell these dynos (DD) and "train" the shops on usage and software, I think we know what we are doing Dyno Dynamics uses a a strapping method on the cradle rollers like no other manufacturer. As the car moves forward the straps tighten, further promoting traction. We had straps in the back in addition to the normal straps that purposely have slack in them. If you force it to stay on the back of the roller it can slip. I've seen this many many times on lower HP RWD cars and we ordinarily strap those cars down differently because of that.

As far as your car making more power, would it make you happy if we had used a correction factor on top of the regular Dyno Dynamics numbers? Let's use the 1.2 number that a few shops use on top of the normal DD one. So now we're looking at nearly 560whp. Would that be better? But the reality is that a 20% drivetrain loss on a turbo that can only produce a little over 600 crank HP (.82/AR) means that this car is already getting to the max of that turbo with "these" dyno numbers. It will be on a Mustang dyno later this month and I will post that up for comparison I bet it will be about 530WHP.
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Old 04-18-2009, 03:54 PM   #13
cpturbo
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My best friend owns a DD dyno. I agree that the car needs to rise up on the front rollers to properly measure HP/TQ output. It does look a tad bit loose, but you are the expert. BTW what does a stock STi do on this dyno.

Thanks
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Old 04-18-2009, 04:43 PM   #14
tmarcel
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Only stock'ish STI that I remember had a TBE and OTS tune did around 220whp. It's been a while so going off of memory. I also tuned a 600whp (2.0L 35R 1.06/AR) Honda and it walked all over the place so this is certainly not the first car that I've seen it. Regardless of the cross straps, if you force a RWD or FWD car to stay at the back of the knurled roller thay WILL spin. This car being AWD probably would not have but the piece of mind comes from having a second set of o'**** straps to stop forward moving progression.
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Old 04-18-2009, 07:06 PM   #15
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I love how you hear the gun getting cocked and shot right when the dyno sheet is shown hah
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Old 04-18-2009, 08:43 PM   #16
alcoolaid
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Quote:
Originally Posted by tmarcel View Post
squashman,

There's a little more to it than that. Considering I used to sell these dynos (DD) and "train" the shops on usage and software, I think we know what we are doing Dyno Dynamics uses a a strapping method on the cradle rollers like no other manufacturer. As the car moves forward the straps tighten, further promoting traction. We had straps in the back in addition to the normal straps that purposely have slack in them. If you force it to stay on the back of the roller it can slip. I've seen this many many times on lower HP RWD cars and we ordinarily strap those cars down differently because of that.

As far as your car making more power, would it make you happy if we had used a correction factor on top of the regular Dyno Dynamics numbers? Let's use the 1.2 number that a few shops use on top of the normal DD one. So now we're looking at nearly 560whp. Would that be better? But the reality is that a 20% drivetrain loss on a turbo that can only produce a little over 600 crank HP (.82/AR) means that this car is already getting to the max of that turbo with "these" dyno numbers. It will be on a Mustang dyno later this month and I will post that up for comparison I bet it will be about 530WHP.
Rocket Rally uses the same dyno and I don't see them having that crazy amount of movement: http://www.rocketrally.com/website/i...=84&Itemid=162

squashman was tuned there as well and they don't use any correction factor.
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Old 04-18-2009, 08:50 PM   #17
squashman
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Quote:
Originally Posted by tmarcel View Post
squashman,

There's a little more to it than that. Considering I used to sell these dynos (DD) and "train" the shops on usage and software, I think we know what we are doing Dyno Dynamics uses a a strapping method on the cradle rollers like no other manufacturer. As the car moves forward the straps tighten, further promoting traction. We had straps in the back in addition to the normal straps that purposely have slack in them. If you force it to stay on the back of the roller it can slip. I've seen this many many times on lower HP RWD cars and we ordinarily strap those cars down differently because of that.

As far as your car making more power, would it make you happy if we had used a correction factor on top of the regular Dyno Dynamics numbers? Let's use the 1.2 number that a few shops use on top of the normal DD one. So now we're looking at nearly 560whp. Would that be better? But the reality is that a 20% drivetrain loss on a turbo that can only produce a little over 600 crank HP (.82/AR) means that this car is already getting to the max of that turbo with "these" dyno numbers. It will be on a Mustang dyno later this month and I will post that up for comparison I bet it will be about 530WHP.
I'm not competing, bragging, or getting confrontational at all (not my deal), but to compare, my car makes 504WHP on pump gas and 575WHP on VP109. It has a Cosworth LB, a GT35R setup with a twinscroll 1.06A/R hotside. This is on a Dyno Dynamics, always with 0 correction. Based on the mods (forget the numbers), I have no doubt that my car makes more power than the one you just tuned. For reference, on that particular dyno, a stock STI puts down 205-215WHP, a 20G setup makes 315-320WHP, a GT52 setup makes 340WHP, a 30R *might* crack 400WHP, and regular old GT35R setups put down 440-460WHP.

Typing all that makes me sound like the biggest douche unfortunately... but I'm honestly just giving you an idea of where I was coming from when I said my car makes more power and doesn't climb out of the rollers like that. Like you said, you're the guy that used to sell and service these, so you would know better than I . Just commenting on what *I* saw that looked pretty sketchy to me.
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Old 04-18-2009, 09:26 PM   #18
05stisilver
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squashman.......thank you for providing more info and not getting into a bashing match....I'm the owner of the car and this is not what I wanted by no means from this post

and.....btw.......the first time I saw my car on this dyno and it did this........my heart jumped into my throat..........it scared the crap out of me.
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Old 04-18-2009, 09:31 PM   #19
jays05
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My car has been on KTR's dyno dynamics and also the DD at The Shop a few times and never did it jump around like that on the rollers.
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Old 04-19-2009, 12:41 AM   #20
k04sti
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Nasty man!
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Old 04-19-2009, 01:04 AM   #21
godforbid67
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29 psi on pump gas, on stock engine, I hope this guy does not expect it to last.
Sick either way.
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Old 04-19-2009, 02:54 AM   #22
STi Mikey
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Quote:
Originally Posted by godforbid67 View Post
29 psi on pump gas, on stock engine, I hope this guy does not expect it to last.
Sick either way.
You would be surprised on how much the "good" motors that leave the factory could take. Junior has a stock motor sti going high 10's on a 35R. I think he has been running clean now for 8-9 months. Big Al dynoflash drove his 35r STi, stock motor, 551whp for a whole year. He broke the trans and not the motor!! Xdrian went 130mph through the traps on a bone stock 07 sti bottom end as well.

But some quick fun then BOOOOOOOOOOOM!!! would definitely be the norm.

Sick numbers OP!! Going to the track anytime soon?
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Old 04-19-2009, 03:44 PM   #23
bloopsta26
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so crazy. gives me high hopes on my car....
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Old 04-19-2009, 03:52 PM   #24
godforbid67
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Quote:
Originally Posted by STi Mikey View Post
You would be surprised on how much the "good" motors that leave the factory could take. Junior has a stock motor sti going high 10's on a 35R. I think he has been running clean now for 8-9 months. Big Al dynoflash drove his 35r STi, stock motor, 551whp for a whole year. He broke the trans and not the motor!! Xdrian went 130mph through the traps on a bone stock 07 sti bottom end as well.

But some quick fun then BOOOOOOOOOOOM!!! would definitely be the norm.

Sick numbers OP!! Going to the track anytime soon?
Yeah i definetly agree, there are some that just last and last and then there are some that dont. The same goes for the WRX trannies, some cant even last at 250 wheel, yet others last at 350+.
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Old 05-01-2009, 04:09 AM   #25
tmarcel
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Quote:
Originally Posted by STi Mikey View Post
Sick numbers OP!! Going to the track anytime soon?
Thx man! Actually, the owner hasn't picked up the car yet as he's been out of town off and on recently but should be picking it up tomorrow. I'll make sure that he gets it to the track ASAP. He wants a secondary rev limit so he can launch it. He's actually a really good driver as far as shifting from what I remember.

The only update aside from the 500whp is that we're building a short block for future use. He wants to push it further and also add cams with the build. Probably a bigger turbo is in the future I'm almost certain.
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